Ethyl 3-amino-5-(difluoromethyl)-2-methylpyridine-4-carboxylate
6-Amino-3-(difluoromethyl)-4-methylpyridine-2-carboxylic acid
2-Amino-5-(difluoromethyl)-3-methylpyridine-4-carboxylic acid
Ethyl 5-amino-4-(difluoromethyl)-3-methylpyridine-2-carboxylate